Sound Performance Lab 9632 User Manual

Loudness Maximizer

The Loudness Maximizer is a digi-

tal compressor/limiter employing com­pletely new techniques to gain per­fectly optimized loudness. Developed
in cooperation with the University of
Bremen/Germany, the algorithms are
constantly responding to the charac­teristics of the input signals to process
with highest musical efficiency. Even
previously processed mixes can gain
additional subjective loudness with­out introducing distortions or loosing
punch.

The loudness of a digital full scale sig­nal (0 dBfs) is maximized without tonal
changes at all – transients, sound co­lours and the spatial images remain un­changed,while an absolutely clip-free
full scale signal is guaranteed.

Nothing but loudness

Unlike usual compressors, the Loud­ness Maximizer does not divide the
signal in frequency ranges but proces­ses the audio material homogenously.
Together with “no-knee”compression
characteristics most unobtrusive ope­ration is ensured.

Standard processing configurations
can be stored in 99 presets.All the para­meters for dynamic processing are con­stantly controlled by the audio itself.
This reduces the number of controls
to three pots and one switch function
and optimizes the processing results:
no “pumping”,no other side effects at
all.

Indispensable

The Loudness Maximizer is perfectly
suited for applications in mixing,maste­ring,post-production and broadcast.

Features

• Internal 56-bit resolution

• Supports mono and stereo proces­sing

• Extremely efficient operation – only
three controls and one switch!

• Adaptively automated processing –
settings are controlled by the audio
itself

• Unique Look Ahead function: the Pos­sible Display indicates possible
loudness maximization

• No pumping or any other side effects

• All encoders with “analog”control fee­ling and alpha-dial logic

• Operates with 24 bit word width and
accepts any word width from 16 to
24 bit (output resolution corresponds
to input resolution)

• High precision Level-Meter

• Soft/Hard control to adjust intensity

• Stores up to 99 presets (selectable by
MIDI program change)

• MIDI fade out

• Synchronisation: Wordclock In and
Wordclock Through BNC connectors
with switchable 75 Ohms termination

• PC and MAC update ports

Applications

• Zero-Overshot-Limiting (clip-free
loudness maximizing is guaranteed)

• Zero-headroom-optimizing

• Loudness-maximizing in mastering

• Loudness maximizing of single takes
during mastering

• Level limiting in broadcast

Specifications

Input/Output

Sample rate frequency: 32-48 kHz, automatic
AES/EBU, twisted pair (1),AES 3
AES/EBU in- & output impedance: 110 Ohms
S/P-DIF, co-axial (2), SPDIF-2
S/P-DIF input impedance: 75 Ohms
Wordclock In/Through,co-axial, BNC
Wordclock in- & output impedance: 75 Ohms
MIDI In/Through
RS 232: software update PC
RS 422: (max +/- 14 V ), software update MAC
Signal and Clip indicators
Input transformer: AES
Output transformer: AES
Relay Hard Bypass: AES

Measurements

AES/EBU: Jitter 1 ns
S/P-DIF: Jitter 3 ns
Wordclock In: Jitter 1.5 ns
Signal delay: 5 ms

Power supply

Toroidal transformer 60 VA
Fuse 1A/slow blow
GND-Lift switch, voltage selector 115V/230 V

Dimensions

19"/1U; 44.45 x 482 x 350 mm
Weight: 4.9 kg

(1)AES/EBU is defined for levels from 2 V to 7 V.
Measurements AES/EBU: 4.4 V with load.
(2)S/P-DIF is defined for levels from 200 mV to 700 mV.
Measurements S/P-DIF: 500 mV with load.

Loudness Maximizer Model 9632

Loudness Maximizer Rear View

Sound Performance Lab · Sohlweg 55 · D-41372 Niederkruechten/Germany · Phone +49 · 2163 · 9834-0, Fax -20 · E-Mail [e-mail] / www.soundperformancelab.com
© 2000 SPL electronics GmbH. All rights reserved.Subjects to change without notice.